Valve-grinding tool



0. T. HA|G.. VALVE GRINDING TOOL. APPLICATION FILED SEPT. 15, I920.

PaoentedSept. 27, 1921.

2 SHEETS-SHEET 1.

O. T. HAIG. VALVE GRINDING TOOL. APPLICATION FILED SEPT. 15, 1920.

PatentedSept. 27, 1921.

' 2 SHEETS-SHEET 2.

its seat through a few UNITED STATES PATENT OFFICE! OTTAR T. HAIG, OF JAMAICA PLAIN, MASSACHUSETTS.

' VALVE-GRINDING TOOL.

To all whom it may concern Be it known that I, OTTAR T. HAIG, a citizen of the United States, residing at Jamaica Plain, in the county of Suffolk and State of Massachusetts, have invented an Improvement in Valve-Grinding following is a specification.

This invention relates to a tool especially adapted for grinding in the puppet valves of internal combustion engines, although well adapted for grinding in valves of. other types of engines.

The preferred method of grinding in a puppet valve is to reciprocate the valve on degrees a suitable number of times with a layer of suitable cutting material between the valve and its seat and then advance or partially rotate the valve a few degrees and repeat the reciprocatory movement; until the valve has been rotated a complete revolution.

An object of my invention is the provision of a tool adapted to impart to the valve both the reciprocatory movement and the rotary movement at will by a reciprocatory and r0- tary movement of its operating handle.

A further object of the invention is to provide a valve grinding tool which may be used 011 practically all. types of automobile engines, will be strong, durable, easily operated to reciprocate and rotatethe valve in any position of the operating handle about its valve engaging component and inexpensive to manufacture.

Figure 1 is a side view of a valve grinding tool embodyingmy invention in engagement with a valve and'arranged to reciprocate it by a reciprocatory movementof the operating handle.

Fig.2 is an end ing tool of Fig. 1.

Fig. 8 is a section along lines 33 of Fig. 2.

Fig. 4 is a plan view of dle locking collar.

Fig. 5 is a sideview of the valve grindingtool arranged to reciprocate the valve by a reciprocatory angular movementof the view of the valve grindthe operating hanoperating handle about its axis.

Fig. 6 is a plan view of the operating handle and its associated components detached from the valve-engaging rod.

Figi bis a plan view of the valve-en aging rod removed from the operating hand e. s sre e l 1 he e e-e g Tools, of which the 7 on saidiextensionend pinion gear 15 on said rod Specification of Letters Patent. P t nt t, 27,1 Application filed September 15, 1920. Serial No. 410,520;

rod having a modified'form of valve engag mg blade detachably connected therewith.

Fig. 9 is a plan view of a collar adapted Said rod 10 has a slot: inits lower'endin which the valve-engagi. g blade is detaohably-secured by the screw 12 V have a milled slot in their heads and for these valves the blade 12 having a curved lower face will be employed. Other valves Some valves have two holes in their top face and for these valves the tool'13 (Fig. 8) having the prongs 13 will be employed. For othertypes of valves-a suitable blade will be used.

The rod 10 is of suitable length to extend into the valve cage or recess and to extend sufficiently above the top of the engine to clear obstructions. The uppergend of said rod 10 is provided with the handle ]14 which is swiveledon said rod by suitable connecting means as the pin 146 engagingthe groove 10 in the end-portion ofsaid rod.v Saidrod intermediate its length carries the-operating mechanism by whichit is reciprocated and rotated to reciprocate and rotate the valve;

Said operating mechanism includes the pinion gear 15 fixed to'said red by the pin 15 or other suitableimeans. A-supportingmember having the tubulan'portion 16 is re ceived on said rod above and rests uponthe' gear15and said rod is journaled in said-tu+ v bular portion. A collar 17 is fixed onasaid rod above said supporting-member and said collar and said gear 15iserve to restrain said supporting-member on said rodagainst axial movement thereon.

The rod. however," is freeto rotatewlthin said supporting member.

Said'tubular portion i's'provided :with a cylindrical extension 18 disposed at right angles thereof adapted the operating handle. An idler. bevel gear 19 having the hub 20 is rotatably'disposed :is in mesh with the s and e is .pivotallyto support 10. The operat- Supported. by the frame having the two arms 21 and 22 disposed at right angles to each other. Said arm 21 has an aperture th-erethrough in which the hub 20 of the idler gear 19 is received; and said arm is adapted to pivot on said hub. A collar 23 fixed to said extension 18 beyond the hub, of. said gear and said frame serves to retain said gear and frame operably in place. The other arm 22 of said frame is provided with a bearing therein in which the opera ling handle 11 is rotatably disposed. The inner end of said handle extends inwardly beyond said arm and a pinion gear 25 is secured thereon and meshes with the idler gear 19.

It will be evident that, with the construction above set forth, a rotary movement the operating handle about its axis will trans mit motion through the idler gear to rotate the shaft 10; and a reciprocatory movement of said shaft will be obtained by a reciprocatory movement of the rod about its axis. in the same manner. If the handle is grasped by the hand sufficiently firmly to restrain it from rotary movement, and the handle is reciprooated about its pivotal connection'with said shaft 10, the idler gear 19; and the pinion gear 25 will be locked toether and the shaft 10 will be reciprccated.

fter the shaft,-and the valve in engagement therewith, has been sufficiently reciprocated in this manner. the valve may beadvanced by partially angularly rotating said handlell about its axis.

As an added feature of the invention, I provide locking means by which the operatinghandle 11 may be restrained from rotary movement as the handle is reciprocated about its pivot to reciprocate the valve. Said means includes the locking-collar 26 which may be removably fixed to said handle :11 adj acent the outer face of said. arm 22 by the screw 27 Said collar has aplurality of semi-circular locking recesses 28 therein. Said arm 22 has a recess 29extending therein from its outer face in which the compression spring 30 and the ball 31 are received. Said ball is adapted partially to extend into the recesses 28 of the locking collar thereby to hold said collar and consequently the operating handle to the frame If a sufficient.- rotational effort is applied to said handle 'llyhowever, theball will be depressed in its recess to permit such rotation.

In some types of automobile engines, the location of the valves are such that" the grinding is best accomplished by the reciprocatory movement of the operating handle about its axis without recourse tothe reciprocatory movement of the handle about its pivot. .Conveniently, to permit this operation, the locking collar 26 will be loosened and movedualong said-handle from its position adjacent said-frame to some position as shown in Fig. 5 and the locking ball 31 will be removed from its recess in the arm of the frame. The operating handle 11 may then be rotatedand will transmit its movement through its gear 25 and its gears 19 and 15 to the rod 10 as before.

It will be noted that with the device'as above described, the operating handle may assume any position about the rod or shaft 10; and the valve may be reciprocated and rotated in any such position of the operat ing handle. This is a highly desirable feature inasmuch as, due to the compact disposition of the engine components and its appurtenances, there is a limited choice of locations of the operating handle when the device is in position to grind the valves. 7

I claim:

' 1.9a valve grinding tool comprising a rocrating handle pivoted to reciprocate in the plane oil. said rod, and connections between said handle and rod by which a recip1'ocatory movement of said handle about its pivot will reciprocate said rod, and a rotary movement of said handle will rotate said 1 roe.

A valve grinding tool comprising a valverc agmg rod, a gear fixed thereon, a

handle-sr b porting member loosely mounted on said rod ab'cv'e said gear, an operating handle pivotally supported by said supporting member reciprocate in thewvertical plane oi? the tool. and a gear connecting said handle and first named gear by which the reciprocatory movement of said handle will recii 'n'ocate said rod.

A. valve grinding tool comprising an operating-handle supporting-member, a ro-' 1 10 tatable operating handle pivoted'thereto to reciprocate in the vertlcal plane of the tool, a valveengaging tool rotatable insaid'supporting-member, and means including-gearing connecting said rod and handle by which a 'reciprocatory movement of said handle about its pivot will reciprocate said rod and a rotary movement of saidhandle will rotatesaid rod.

5. valve grinding tool comprising an operating handle supporting member, an

. idler gear rotatably supported thereon, a

valve-engaging rod rotatable in said supporting-member, a pinion gear fixed to said rod meshing with said idler gear, an operating handle pivotally supported by said supporting-member, and a gear fixed to said handle meshing with said idl :gear;-,to rotateqit.

awns 6. A valve grinding 'tool comprising an operating-handle supporting-member, an idler gear rotatably supported thereon, a valve-engaging rod rotatable in said supporting-member, a pinion gear fixed to said rod meshing with said idler gear, a rotatable operating-handle 'ivotally supported by said supporting-mem er, and a gear fixed to said handle meshing with said idler gear to rotate it also arranged'to lock said handle to said idler gear whereby to admit of a reciprocatory movement of said gear and handle as a unit.

7. A valve grinding tool comprising an operating-handle supporting member having a lateral extension, an ldler gear rotatably-mounted on said extension, a valve-engaging rod rotatable in said member, a gear fixed to said rod meshing with said idler gear, a frame pivotally supported by the lateral extensionof said supporting member having an operating-handle bearing, an operating handle rotatably received in said bearing, and a gear fixed to said handle meshing with said idler gear.

8. A valve grinding tool comprising a valve-engaging rod, an operating-handle, means pivotally angularlysupporting and rotatably connecting said handle and rod whereby said handle may be reciprocated about its pivot to reciprocate said rod, and rotated to rotate said rod, and means releasingly to lock said handle against rotary movement. a p

9. A valve grinding tool comprisin a supporting member, an idler gear rotata bly supported thereby, a valve-engaging rod rotatable in said member, a gear fixed on said rod meshing with said idler gear, a frame pivotally mounted on said supporting member, a a operating handle rotatably supported 1n sai frame, a gear fixed to said handle,

meshing with said idler gear and means releasingly to lock said handle to said frame against rotation.

10. A valve grinding tool comprisin a supporting-member, an idler gear rotatajnly supported thereby, a valve-engaging rod rotatable in said member, a gear fixed on said tatably mounted on said extension, a frame pivotally mounted on the hub of said idler gear, a collar fixed to said extension beyond said idler gear and frame, a handle journaled in said frame and a gear fixed to said 7 handle meshing with said idler gear.

12. A valve valve-engaging rod, a pivoted and axially 'andle laterally exrotatable operating h tended from said rod, and speed-up gearing connecting said rod and handle whereby a rotary movement of said handle results in a rotary movement of said rod and a reciprocatory movement of said handle results in an enlarged reciprocatory movement of said rod. I

In testimony'whereof I havesigned my name to this specification.

OTTAR T. HAIG.

grinding tool comprising a 

